chambeelin



(Nb Model.)

J.V. CHAMBBRLIN.

Oscillatingngin-e. f

u No. 240,657.- Patented April 26,1881.

. ,JM/mwbfmn J, Chamberlin;

l llil/[his UNITED STATES PATENT OEEICE.

JOHN OHAMBERLIN, OF WORCESTER, `MASSACHUSETTS, ASSIGNOR TO WEBSTER 85 OHAM'BERLIN, OF SAME PLAGE. Y

OSCILLATING ENGINE.

SPECIFICATION forming part of Letters Patent No. 240,65*?, dated April 26, 1881.

Application iiled September 27, 1880. (No model.)

To all whom it may concern:

Be it known that I, JOHN V. OHAMEERLIN, of the city and county of Worcester. State of Massachusetts, have invented a new Improvement in Oscillating Engines, of which the following is a speciiication.

My invention relates to the arrangement of the ports and steamways in connection with an adjustable collar or steam-chest and a reversing valve or cock, the nature of which is shown in the following description and drawings of those parts ot' an engine embodying my invention.

1n said drawings, Figure l is a side view of the cylinder and adjacent parts, with the reversing-valve shown in section. Fig. 2 shows the same as seen from above, theparts having the same letter in each.

A is the cylinder, oscillating in the usual way on the trunnion m, in a suitable bearing in the frame B.

w is a collar between the cylinder A and frame B, through which the steamways c c from each end ot' the cylinder are brought to the circumference. On this is fitted the steamchest D, held in place by the cap O and adjusting-screws n n. The steam-chest D has three ports in its surface on 2 0, the two outer, a a, connected together in one and with the other, c, forming two passages to the reversi n g-valve R. The two ports of 'w and three of D are set in the usual way, so that with the lnotion of the cylinder each one of to is alternately brought to match the middle one ot' D, and the other an outer one. The passages c c are given a quarter-turn before they get to R, so that it may stand at right angle to the trunnion m. The reversing valve or cock R is made with a central opening, g, for the discharge, having its aperture Ziitted so as to be brought to either passage a or e, and the outside of R is cut away to form a passage, f, from the steam-pipe 7c to the other.

By having the ports in the circumference ot' w and the use ot the piece D the wearingsnrt'ace is equalized, and compensation can be made by the screws n n, and, if desired, the piece D can be set so as to"`give a lead to the ports either way, while by the arrangement therewith ot' valve R the passages a and e can either of them be made leader or discharge by turning the opening l from one to the other, which reverses the action of the piston, giving a reverse motion.

The other parts (not shown in the drawings) may be ot' almost any desired form and general arrangement in common use suitably adapted to the above, and therefore notneeding further description here.

Having thus fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. In an oscillating engine, the reversingvalve R, provided with the passage f, and having central opening, g, provided with the aperture l, all constructed and arranged substantially as and for the purpose specified.

2. In an oscillating engine, the reversinggear R, constructed, as described, with the passage f, central opening, g, and aperturev l, in combination with the steam-chest D, all constructed and arranged substantially as specified.

In testimony whereof I hereunto set my my hand this 24th day ot' September, A. D. 1880.

JOHN V. OHAMBERLIN. Witnesses:

KELO WANN, J. G. ARNOLD.A 

